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A company purchased a machine valued at $120,000.
The value of the machine depreciates by the same amount each year so that after 10 years the value will be $30,000.
Which of the following equations gives the value, v, of the machine, in dollars, t years after it was purchased
for 0 ≤ ≤ 10 t ?
A) v = 30,000 − 9,000t
B) v = 120, 000 − 9, 000t
C) v = 120,000 + 9,000t
D) v = 120,000 − 30,000t